It is best to
un-install
the demo version of the control before installing the purchased version.

Run the setup/install
for
the purchased version and enter the password you were given after your
credit card information was processed.

Using the purchased
copy:

You should ensure that
only
one copy of the "IO.OCX" is on your development machine. You may have
to
re-insert the I/O Control onto the form you are using it with. Then
re-compile
your application.

NOTE: if you
test
deploy your application on your development machine, you may end up
with
more than one copy of "IO.OCX" on your machine. Delete the "IO.OCX"
files
and re-install the I/O Control for further development.